Re: [time-nuts] current crop of GPS receivers for Rpi/Beaglebone for NTP server/etc
I don't know of any no-wire setups for the Beaglebone. (I somewhat remember
one, but it included something else I didn't need and the price was high
enough that I ignored it.)
If anybody finds one, please let us know.
There are at least 3 GPS HATs for Pis.
The first two include a patch antenna. Depending on your location, you may
be able to run without an external antenna. The Adafruit has a tiny u.FL
connector rather than a SMA so it fits into a normal enclosure with no
modifications.
Adafruit:
https://learn.adafruit.com/adafruit-ultimate-gps-hat-for-raspberry-pi
You need to solder on the 40 pin header.
SKU 424254:
http://www.dx.com/p/add-on-gps-module-gps-hat-module-for-raspberry-pi-2-mod
el-b-b-424254
(I haven't tried one.)
Uptronics:
https://store.uputronics.com/index.php?route=product/product&path=60_64&prod
uct_id=81
See Davit Taylor's msg for the US source.
The old(er) Uptronics board had the antenna connector going out the end
rather than the side. That doesn't fit with new Pis that have 4 USB slots.
On older Pis, it puts the cable in the slot between 2 connectors. You can
use old enclosures by just breaking off one tab.
Lots of info here:
https://www.ntpsec.org/white-papers/stratum-1-microserver-howto/
You may have to dig to find the stuff you are interested in.
--
These are my opinions. I hate spam.
I used
https://store.uputronics.com/index.php?route=product/product&path=60_64&product_id=81
and I'm happy with it. Good instructions.
On Mon, Oct 16, 2017 at 2:46 PM, Hal Murray hmurray@megapathdsl.net wrote:
I don't know of any no-wire setups for the Beaglebone. (I somewhat
remember
one, but it included something else I didn't need and the price was high
enough that I ignored it.)
If anybody finds one, please let us know.
There are at least 3 GPS HATs for Pis.
The first two include a patch antenna. Depending on your location, you may
be able to run without an external antenna. The Adafruit has a tiny u.FL
connector rather than a SMA so it fits into a normal enclosure with no
modifications.
Adafruit:
https://learn.adafruit.com/adafruit-ultimate-gps-hat-for-raspberry-pi
You need to solder on the 40 pin header.
SKU 424254:
http://www.dx.com/p/add-on-gps-module-gps-hat-module-for-
raspberry-pi-2-mod
el-b-b-424254
(I haven't tried one.)
Uptronics:
https://store.uputronics.com/index.php?route=product/
product&path=60_64&prod
uct_id=81
See Davit Taylor's msg for the US source.
The old(er) Uptronics board had the antenna connector going out the end
rather than the side. That doesn't fit with new Pis that have 4 USB slots.
On older Pis, it puts the cable in the slot between 2 connectors. You can
use old enclosures by just breaking off one tab.
Lots of info here:
https://www.ntpsec.org/white-papers/stratum-1-microserver-howto/
You may have to dig to find the stuff you are interested in.
--
These are my opinions. I hate spam.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop
to reproduce the signal, and the only way to return it back to business
is little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another
one is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is a
pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the
signal again ! Before this it was nothing ! I tried different PS before
to open this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a
little bit. And immediately after that, it start to produce the signal !
--
WBW,
V.P.
In your image ...125 it looks like there is a cold solder joint near the
bottom right, in the second "column" of pads, 3 pads up from the bottom.
On Mon, Oct 16, 2017 at 4:10 PM, Vlad time@patoka.org wrote:
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop to
reproduce the signal, and the only way to return it back to business is
little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another one
is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is a
pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the signal
again ! Before this it was nothing ! I tried different PS before to open
this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a little
bit. And immediately after that, it start to produce the signal !
--
WBW,
V.P.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/m
ailman/listinfo/time-nuts
and follow the instructions there.
--
--Jim Harman
Sorry, this image
http://www.patoka.ca/Vectron-218Y44442/IMG_20171015_193511542.jpg
On Mon, Oct 16, 2017 at 6:22 PM, Jim Harman j99harman@gmail.com wrote:
In your image ...125 it looks like there is a cold solder joint near the
bottom right, in the second "column" of pads, 3 pads up from the bottom.
On Mon, Oct 16, 2017 at 4:10 PM, Vlad time@patoka.org wrote:
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop to
reproduce the signal, and the only way to return it back to business is
little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another one
is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is a
pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the
signal again ! Before this it was nothing ! I tried different PS before to
open this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a
little bit. And immediately after that, it start to produce the signal !
--
WBW,
V.P.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/m
ailman/listinfo/time-nuts
and follow the instructions there.
--
--Jim Harman
--
--Jim Harman
I've experienced this with products with simple crystal oscillators. (Ie. Tap or bang the unit to get the oscillator to start oscillating.)
Mark Spencer
mark@alignedsolutions.com
604 762 4099
On Oct 16, 2017, at 1:10 PM, Vlad time@patoka.org wrote:
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop to reproduce the signal, and the only way to return it back to business is little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another one is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is a pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the signal again ! Before this it was nothing ! I tried different PS before to open this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a little bit. And immediately after that, it start to produce the signal !
--
WBW,
V.P.
time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.
Oscillators need a little noise to start up. Usually there's plenty in
almost any circuit, but if you're running cold, or voltage is a little
low, you might not have enough to start.
The mechanical impulse adds noise (crystal = piezoelectric) to the
feedback loop; apparently enough to get it started.
Might be that your power supply is running a bit low, and you don't have
quite enough gain to start.
On 10/16/2017 4:10 PM, Vlad wrote:
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop
to reproduce the signal, and the only way to return it back to business
is little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another
one is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is a
pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the
signal again ! Before this it was nothing ! I tried different PS before
to open this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a
little bit. And immediately after that, it start to produce the signal !
Hi
Welcome to the 1990’s … that’s an old design. Since Vectron kept building same / same
(if you ordered it that way) who knows when it was built.
Bob
On Oct 16, 2017, at 4:10 PM, Vlad time@patoka.org wrote:
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop to reproduce the signal, and the only way to return it back to business is little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another one is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is a pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the signal again ! Before this it was nothing ! I tried different PS before to open this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a little bit. And immediately after that, it start to produce the signal !
--
WBW,
V.P.
time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.
The crystal is socketed: the problem might be the socket.
On Tue, Oct 17, 2017 at 1:56 AM, Bob kb8tq kb8tq@n1k.org wrote:
Hi
Welcome to the 1990’s … that’s an old design. Since Vectron kept building same / same
(if you ordered it that way) who knows when it was built.
Bob
On Oct 16, 2017, at 4:10 PM, Vlad time@patoka.org wrote:
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop to reproduce the signal, and the only way to return it back to business is little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another one is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is a pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the signal again ! Before this it was nothing ! I tried different PS before to open this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a little bit. And immediately after that, it start to produce the signal !
--
WBW,
V.P.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
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and follow the instructions there.
I was thinking the same as Azelio, I had a Racal 04B OCXO which refused to
start until I reseated the crystal in the socket. After that, well, it's in
almost daily use as a reference in a 1992 counter and has never stopped
since.
On 17 Oct 2017 07:18, "Azelio Boriani" azelio.boriani@gmail.com wrote:
The crystal is socketed: the problem might be the socket.
On Tue, Oct 17, 2017 at 1:56 AM, Bob kb8tq kb8tq@n1k.org wrote:
Hi
Welcome to the 1990’s … that’s an old design. Since Vectron kept
building same / same
(if you ordered it that way) who knows when it was built.
Bob
On Oct 16, 2017, at 4:10 PM, Vlad time@patoka.org wrote:
Hello,
I am wandering if anybody observe the behavior for OCXO, when its stop
to reproduce the signal, and the only way to return it back to business is
little mechanical stress.
I have TWO of such OCXO. One of them is Austron 11.2 Mhz. And another
one is Vectron model 218Y4442 9.8304Mhz
In case with Vectron, I even disassemble it (to whom who brave here is
a pictures):
http://www.patoka.ca/Vectron-218Y44442/
Then as I connect it to the PS, I realize it start to reproduce the
signal again ! Before this it was nothing ! I tried different PS before to
open this "can" as a last resort.
For the Austron - I didn't disassemble it. Instead I just kick it a
little bit. And immediately after that, it start to produce the signal !
--
WBW,
V.P.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/
mailman/listinfo/time-nuts
and follow the instructions there.
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To unsubscribe, go to https://www.febo.com/cgi-bin/
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